Answer:
Oxygen
Explanation:
Photosynthesis is a process performed by the plants (also some algae and bacteria) in which the energy of sunlight is transformed into chemical energy usable by those plants. Necessary components of this set of reactions are sunlight, water and CO2, while resulting products are glucose and oxygen. Products of photosynthesis are then used in the metabolic processes known as cellular respiration. During the cellular respiration, glucose and oxygen are used for the production of ATP, CO2 and water. Cellular respiration is performed in all living organisms.
An ovary is the reproductive part of the uterus that produces the egg (ovum) to be fertilized by the sperm
Carbohydrates are broken down and they release energy.
The elodea is getting the carbon dioxide from its environment like when underwater animals breathe out carbon dioxide the plants will use that carbon dioxide. The plants can also get the carbon dioxide from the atmosphere which can "dissolve" in water.
The dialysis tubing and cell membrane are similar in the fact they protect the cell. The tubing as well as cellmembranes are selectively permeable, they control the movement of substances in and out of the cell. Starch molecules are larger than glucose molecules.